Compare PDF — Free, Private, No Limits
Version A (original)
Version B (revised)
Compare PDF highlights exactly what changed between two versions of a document — every added, removed, or altered line — so you don't have to read both files side by side looking for edits. This is useful for reviewing contract redlines, checking whether a "final" document actually matches the draft you approved, or auditing changes between report revisions. Both files are read and compared entirely in your browser: text is extracted from each PDF and run through a line-level diff, with additions and removals clearly color-coded in the results. You can also download a plain-text diff report to share with colleagues or keep for your records.
How to use Compare PDF
- 1
Upload the original PDF (Version A).
- 2
Upload the revised PDF (Version B).
- 3
Click "Compare PDFs" to run the comparison locally.
- 4
Review the color-coded differences on screen, or download the diff report.
Frequently asked questions
This version compares text content line-by-line; purely visual changes (like a moved image with no text change) are not detected.